Heald of looms for weaving



M. W, CARR HEALD OF LOOMS FOR WEAVING June II, 1937.

Filed March 6, 1935 INVENTOR.

Patented June 1, 1937 UNITED STATES HEALD oF LooMs Fon. wEAvmG Mark William Carr, Keighley, England Application March 6, 1935, Serial No. 9,604 In Great Britain March 28, 1934 9- Claims.

'Ihis invention relates to the type or class of healds for weaving which are usually styled metal healds and which require mounting or arranging in rectangular frames for securing the healds in their operating positions, and my said invention has especial reference to the construction of the frame referred to, and by the provision and application of means whereby said frames are strengthened, more freedom is given to the movements of the metal healds mounted thereon, and less liability of the healds causing defects inthe weaving operations is encountered.

These features are secured according to my invention by the employment of additional metal or other supporting bars, preferably mounted within the rectangular frame and of novel arrangement andformation for attachment to the usual wooden staves, so that upon said bars I may mount supporting members which are formed to afford all the desired support for the well known metal bars or strips upon and over which the metal healds are looped or mounted. The said mounting of the metal bars upon which the healds are placed, also permits the supporting members to move freelylongitudinally over my added supporting bars which are secured to both the upper and lower staves of the rectangular frame, thus affording freedom for the movement of the healds to prevent same from exerting undue lateral strains upon the threads of warp as they are when firmly and rigidly held under the ordinary conditions.

In the following description reference is made to the accompanying sheet of drawings, which forms part of this specication, in which:-

Fig. 1 is a front elevation of a heald frame and a few healds shown mounted thereon as is hereinafter explained.

Fig. 2 is a sectional end elevation showing the upper half of a heald frame and three horizontal bars which support the healds by the addition of intervening members.

' Fig. 3 is a front elevation of one of the wooden staves forming the rectangular frame and the ordinary metal bars which support the metal healds in the usual manner, and to these are added my additional longitudinal bar for supporting the other metal bars and their healds.

Fig. 4 is an end elevation showing my added `metal supporting bar and one of my improved members mounted thereon, the same being drawn to an enlarged scale.

Fig. 5 isv a similar view to Fig. 3 but illustrates a modification hereinafter described.

Fig. 6 is a front elevationl similar to Figs. 3

and 5 andis intended to show the method in which my novel devices act when in use.

Fig. 7 is an end elevation similar to Fig. 4 but shows a modification hereinafter described.

Fig. 8 is a sectional elevation showing one of 5 the supporting devices which I make use of according to my invention to aiord an advantaf. geous movement of the healds.

Fig. 9 is a perspective view showing a portion of one of my added bars of modified form, as hereinafter described.

To attain the object of my invention I mount two additional bars 2, preferably of metal, (for use in broad looms, although they may be of wood when found -to be advantageous) within each of the usual and well known types of rectangular frames (comprising the Wooden bars a, a1 and their end binding members .'c, x1, Fig. 1) within which the healds 5 are mounted, and each of these additional bars 2, according to one formation, is of T-shape in cross section, the upper one being in an inverted Tv position upon the up-I per wooden bar a, while upon the lower bar a1 the bar 2 is in its upright T position.

The bar 2 of the shape described has its body part b of appropriate thickness and of suilicient width or depth to iit snugly into a longitudinal groove c made lengthwise in the body of the bars a and a1 so that the central portionof its body part b may be free to slide for a short space in a vertical ldirection to permit any bending movements of the bars a and a1 as they are moved by their operating cords apart from each other without moving the bars 2 to put greater longitudinal strains upon the healds 5. Each bar 2 has its lateral flanges b1 and b2 extending from it so that supporting members 3 may be mounted thereon in such manner that they are free to slide longitudinally over the said flanges b1 and b2 of said bar 2. The bar 2 is fixed near its outer ends by cross pins d, d1 which pass through vthe bar a and also through the bar a1.

The cross pins d, d1 retain the ends of the bars 2 rigidly within their grooves in the wooden staves or bars a, a1 in which they are situated. However, by the springing or yielding of each of said bars or staves a, a1 at about its central part as stated, being permitted Without such movement being imparted to its bar 2 (by reason of its middle part between the pins d, d1 being loosely mounted in its groove in the bar a or al) sufficient freedom for the actions of the ordinary longitudinal bars aal is allowed without causing same rigidly to bind and hold its bar 2 against all relative movement therewith. By vthese means only such a longitudinal pull is put upon the healds by their operating bars 4 as will adequately operate said healds 5 and their threads 'of warp without causing the engaging looped ends of said healds 5 upon their bars 4 to be so rmly held as not to be bound thereon to prevent all lateral movement of same, but under such conditions as allow the said healds 5 sumcient freedom to move either to the right or to the left of their normal positions to prevent them from forcing their warp threads into such rigidly conned positions as Will cause abrasions on said threads.

To prevent the bar 2 from being moved too far out of its groove c in its wooden stave a or a1, a looped strip of metal 6 is ilxed to the sides of the bar a. or a1 and has its looped part 6a bent through the opening 2d in the bar 2 in order that the edge 2c of the bar 2 may be arrested when the looped formation 6a of the bar 2 reaches the end of its path.

l Mounted to extend over the anges b1 and b2 of each of the bars 2 are the supporting members 3 which are of a bifurcated formation, so that their outer ends may be turned inwardly and terminate in a curved formation 3a shown by Fig. 8 to rest upon the flanges b1, b2 of the bar 2 in order that when any of the healds 5 are caused, by the lateral pull of the warp threads upon them, to move longitudinallyover their supporting bars 4, the acting of said healds 5 upon the ends 3a of the members 3, secures the desired slipping movement to relieve the heald 5 of any resisting force that will retain it rigid and rm against the actions of the threads of Warp upon it, as hereinbefore stated.

The lower hooked ends 3b of the supporting members 3 are to receive and support or be supported by the bars 4 upon which the healds 5 are mounted.

As means for further facilitating the lateral movements of the members 3, the ends 3a may have mounted upon them balls or runners 'l which will run over the ilanges b1 and b2 on the bars 2 so as to afford less resistance to the lateral forces of the threads of warp upon healds adjacent to them because of the more easy running of the balls or runners 1 over the surfaces of the flanges b1 and b2 when arranged as is shown by Figs. 5 and '7.

As a modification in the construction of the bars 2, the anges b1, b2 may be bent towards each other to produce the tubular formation b5 shown by Fig. 9.

In this arrangement the supporting members 3 have their ends 3d formed to t in the tube b5 in order to rest upon theedges b of the tube to be supported by same as they may move along the slot between them.

Although the tubular member b5 is shown with a web b" extending from it, this may be dispensed with in cases (such as healds for narrow looms) where its tubular shape is found to be strong enough.

Such being the nature and object of my invention, what I claim is:-

1. A harness frame for looms, comprising a rectangularframe formed by grooved longitudinal bars being bound to each other by end members at right angles thereto, metal healds, two horizontal metal bars upon which the healds are mounted, coupling elements detachably secured to the metal bars which carry the healds, additional bars connected by the elements on the heald supporting bars, InGaIlS for fixing the outer ends of the additional bars in the grooves of the longitudinal bars of the frame, and means for limiting the movements of the longitudinal bars with respect to the additional bars.

2. A harness frame for looms, comprising a rectangular frame, longitudinal bars bound to each other by end members at right angles thereto, additional bars secured to the longitudinal bars, elements for securing the additional bars to the longitudinal bars to allow for any movement of the central part of the longitudinal bars from the additional bars, means for limiting said movement, heald carrying bars, hooked engaging members for coupling the additional and the heald-carrying bars to each other in their respective pairs, and metal healds having loops on their extremities iltting over the bars which carry them.

3. A harness frame for looms comprising spaced longitudinal bars having slots in their inner opposed edges, rail forming bars arranged in said slots and secured near their ends only to the longitudinal bars `toallow for ilexure of the central portion of the longitudinal bars, said rail forming bars being capable of limited vertical movement with respect to the longitudinal bars, heald supporting bars, healds carried thereby, and loosely sliding members receiving and supporting the heald supporting bars and supported by the rail forming bars.

4. A harness frame for looms comprising spaced longitudinal bars, each bar being slotted in its inner edge, a. rail forming bar arranged in the slot of each longitudinal bar and secured near its ends only to the respective longitudinal bar to allow lexure of the central portion of the longitudinal bar, the inner edge o! each rail forming bar being ange'd and spaced -from the inner edge of the respective longitudinal bar, heald supporting bars', healds carried thereby,

coupling members mounted for loose slidable en- Igagement with the anges of the rail forming bars, the inner ends oi' said coupling members being formed with hooks for engagement with the heald supporting bars.

5. A harness frame for looms comprising spaced longitudinal bars, said bars being slotted at their inner edges. a rail forming bar fitted in the slot of each bar, transverse pins extending through the end portions only of the longitudinal bars and the rail bars to allow for fiexure of the central portion of the longitudinal bars, means for limiting transverse sliding movement of the rail forming bars with respect to the longitudinal frame bars, heald supporting bars, healds carried thereby, and means for connecting the heald supporting bars to the respective rail forming bars in a manner as to permit longitudinal movement of the heald supporting bars with respect to the rail forming bars.

6. A harness frame for looms, comprising upper and lower longitudinal frame members formed with grooves in their inner opposed faces, rail forming bars having their body portions arranged in the grooves and secured only at their ends to the longitudinal members to allow for the exure of the central portion of the longitudinal members, each rail forming bar having flanges formed on the inner longitudinal edge thereof, upper and lower heald supporting bars, healds mounted upon the supporting bars, and connecting members formed to engage loosely with the ilanges of the rail forming bars and With the heald supporting bars.

'1Q vA harness frame for looms, comprising af rectangular frame including longitudinal bars tudinal bars only near theends thereof to allow for flexure of the central portion of the longitudinal bars and having lateral ilangesvformed upon them,heald supporting bars, connecting members. each having a pair of hooked engaging members at one end for spanning the additional. bars and resting in contact with the lateral iianges thereon,"while another hook is formed at the other end of said connecting members to engage with the heald supporting bars, and metaly healds mounted between said supporting bars to be operated by them.

8. A harness frame for looms, comprising a rectangular frame, including slotted longitudinal bals, additional bars mounted in the slots ofv the longitudinal bars of the frame and secured thereto only near the ends thereof to allow for exure of the centralportion of the longitudinal bars, said additional barshaving lateral ilanges on their inner longitudinal edges, coupling members having means at one end for loose slidable engagement with the lateral flanges, heald membersior supporting the heald operating bars,

vand healds mounted upon said heald operating bars.

9. A harness frame for looms, comprising al rectangular frame, including slotted longitudinal bars, additional bars mounted in the slotted 1ongitudinal bars of the frame and secured thereto only near the ends thereof to allow for exure of the central portion of the lonigitudinal bars, said additional bars having a slotted tubular track, heald supporting bars, supporting membersbhaving their outer ends constructed to op- MARK WILLIAM CARR.

' operating bars, hooks formed on the coupling 

